Company email (August 2012):
"No animal products are used in the production of our beer, with the exception of our Wild Honey Ale, which of course contains honey."

Company email:
"None of our products contain any animal or animal derived products. The notable exception is the Wild Honey Ale; little bees make the honey for us! Of course, all beer (and wine) is fermented by yeast, a unicellular organism (a fungi). The yeast is filtered out of all of our brands, except our Liplock Summer Wheat and Blackheart Oatmeal Stout. There will be yeast in those last two brands."